In which of the following layers of the OSI model would MAC addressing be found?

A. Network

B. Application

C. Data Link

D. Transport

Two workstations are unable to communicate on the network despite having known good cables. When one device is unplugged from the network the other device functions properly. Which of the following could be the cause of this failure?

A. Duplicate IP address

B. Incorrect subnet mask

C. Incorrect gateway

D. Wrong DNS

Which of the following are valid hosts for the Private IP Address range 172.16.0.x /23? (Select TWO).

A. 172.16.0.255

B. 172.16.0.0

C. 172.16.1.1

D. 172.16.8.0

E. 172.16.256.255

When a patch cable is plugged into a switch, all port activity indicators turn on and users instantly lose network connectivity. Which of the following is the MOST likely diagnosis?

A. Denial of service attack

B. MTU black hole

C. Switching loop

D. Defective patch cable

Which of the following could be installed to allow a home user with one desktop computer to economically have Internet access in every room in the house?

A. Fiber optic

B. CAT6

C. Broadband over powerline

D. CAT5

Which of the following WAN technologies has synchronous up/down speeds?

A. T1

B. ADSL

C. Satellite

D. Cable broadband

Which of the following is a square shaped fiber connector that is slightly smaller than a standard copper network cable connector?

A. BNC

B. FSMA

C. MT-RJ

D. ST

When dealing with high bandwidth applications such as VoIP and VTC, which of the following network performance optimization tools should be implemented to ensure BEST performance?

A. Fault tolerance

B. Load balancing

C. Caching engines

D. QoS

A computer has lost network connectivity. The network technician determines the network cable and the cable drop are both good. Which of the following would the technician use to test the computer's NIC?

A. Cable certifier

B. Throughput tester

C. Loopback plug

D. Multimeter

A user reports sporadic network outages. The user tells the administrator it happens after approximately 20 minutes of work on an application. The administrator should begin troubleshooting by checking which of the following?

A. The IDS server logs

B. The DNS resolution time

C. The firewall's blocked logs

D. The patch cable